Flue swaging and plugging machine.



PATENTED APR. 17, 1906 W. R. BARNES.

FLUE SWAGING AND PLUGGING MACHINE.

'APPLIUATION FILED MAY 10, 1905.

2 SHEETS- SHEETl 51 mm m to;

atkoznc g PATENTED APR. 17, 1906.

W. R. BARNES.

FLUE SWAGING AND PLUGGING MACHINE.

APPLICATION FILED MAY10.1905.

2 SHEETSSHEET 2.

wi was UNKTE STATES nrn'r onion.

Specification of Letters Patent.

Patented April 17, race.

Application filed May 10, 1905. Serial No. 259.83%.

To all whom it may concern.-

Be it known that I, WILLIAM RILEY BARNES, a citizen of the United States, residing at Atlanta, inthe county of Fulton and State of Georgia, have invented certain new and useful Improvements in Flue Swagmg and Plugging Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and'use the same.

This invention relates to improvements in flue swaging and plugging machines; and it has for its object the provision of a machine 111 which fluesmay be expanded to fit the holes in a flue-sheet, leaving the fiues perfectly free from dirt and scale and obviating the necessity of using liners and the labor of applying the same.

The machine is also designedto move it POSSIble to thoroughly test the fiues before they are inserted in boilers for use. With these and other objects in view the invention comprises certain novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawin s, Figure 1 is a side elevation of my Improve swa ing-and plugging machine. Fig. 2 is an end e evation of the same. Fig. 3 is a plan View of the swaging-head carrying a modified form of collar with certain parts broken away, the section of the broken-away parts being taken on lines 3 3 of Fig. 6. Fig. 4 is a top plan view of the swaging-head with portions of pipes in position, a portion of the head being roken away on the line 3 3 of Fig. 6. Fig. 5 is a top plan view of the swaging-head carr ing a modified form of collar and part of t clamping-jaws with tubes in position, parts being broken away on line 3 3 of Fig. 6. Fig. 6 is a detail view in end elevation of the swaging-head for swaging the tubes. Fig. 7 is an end elevation of the clamping-jaws for holding the tubes in position for swaging.

A machine for swaging and testlng fiues embodying the features of the present invention is provided with a frame 1, upon which power-cylinders 2 and 3 are mounted and upon which also" gripping means made up of upper and lower gripping-jaws 4 and '5 are supported. The grippingjaws are so arranged that the pi es or tubes to be swa ed or spread are capa is of being firmly hel in position by pressure delivere to the powerseats 6, in which the tubes rest.

coupled with a supply-plpe 17.

cylinderB. To facilitate this ripping of the tubes, the lower gripping member is made in two parts, as indicated at 5, and each of said parts is formed with V-shaped grooves or The tubes are held in the if-shaped grooves by means of the u per gripping member 4, which is made broa enoug to project over both of the lower gripping members 5. The upper gripping-jaw 4 is provided with grooves or recesses upon its under surface for fitting upon the said tubes. A piston-rod 7 is connected with the u per jaw 4 and extends downwardly to th e cylinder 3, and within the said cylinder it is connected with any suitable piston head. The cylinder 3 is provided with inlet-piping 8, connected with any suitable source of power, so that pressure may be admittedinto the up er end of the said cylinder 3 for forcing t e piston downwardly and tightly drawin the jaw 4 upon the tubes below. A controlling-valve 9 is located in the piping 8 at any suitable point for controlling the admission of pressure to theeylinder 3. When the pressure in the cylinder'is released, the piston 4 will be carried upwardly again to the Iplosition indicated in Fig. 1 b a spring 10, w 'ch surrounds the piston-r0 7 and engages a head or'washer 11, secured upon the piston-rod 7. The lower end of the s ring 10 is shouldered against the packinggland 12 of the cylinder. .The cylinder 2 is also provided with a (piston of any suitable t e, and a piston-r0 cy inder and carries a swaging-head 14. I The piston and piston-rod are so mounted that the swaging-head will be capable of movement longitudinally in the axis of the tubes. The movement of the piston in the cylinder 2 13 projects from the is preferably and positively controlled by power introduced into the opposite ends of the cylinder, and pipin 15 and 16 1s provided and connected Wit the opposite ends of the said cylinder, the said p1 ing being valve, as 18, is mounted at t e uncture of the pipes, and an exhaustipe 19 leads from the casing of the valve. T e valve is preferably a three or four way valve and is so constructed that pressure may be directed from the inlet-pipe 17 throu h either the i e 15 or 16 to t e ends of tie c linder. hen pressure is entering the cy inder through the pipe 15, the o posite end of the cylinder is exhausting through the pipe 16, and when the pressure is turned into the pipe 16 it is cut oii iro m IIO the pipe 15 and the exhaust from the oppo site end of the cylinder is ermitted to pass out throu h the pipe 15 and the exhaust-pi e 19. In t 's way the swaging-head may positively forced in each direction.

The swaging-head M is preferably constructed so that one or more tubes may be operated upon simultaneously. As shown in the drawings, the swaging-head is formed with two pipe-receiving apertures 20 and 21, and opposite to the said apertures are plugs or swages 22, secured to the inrier portion of the swaging-head. The plugs or swages 22 are removably secured to the swagin -head by means of screw-bolts 23, so that oril one 0 said plu 's may be used, or two may e inserted 1n the swaging-head and used simultaneousl.

In ordhr to facilitate the removal of the tubes after'they have been swaged or upset at their ends, the apertures 20 are made of sufficient size to accommodate such spread or swaged ends and permit of their passing freely through them. In order to hold the tubes in position properly centered with relation to the plugs or swages 22, I insert removable collars or ferrules 24 in the said a ertures 20, the ferrules being made to fit t e size of the flue. Set-screws 26 are employed for holding the ferrules in place.

' In using the machine'for swaging fiues the tubes to be operated upon are extended with their ends projecting between the jaws 4 and 5 of the ripping mechanism. The gripping-jaw is then brought down tightly upon the tubes by letting pressure into the upper end of the cylinder 3. Pressure is next introduced into the outer end of the cylinder 2 and the swagin -head is forced forward about the ends of the tubes, the ferrules or collars surrounding the said tubes and the plu s or swages 22 extendin into the ends 0 the tubes which project beyond the said ferrules. In testin the tubes the plugs are only forced against tIie ends of the tubes with sufficient power to s read their ends. If there is any lefect in t e end of the tube, such as a split ortion or imperfection of any kind, it will be disclosed by the spreading ofthe said end. While the tubes are thus gripped by the swaging; machine, liquid or other pressure may also be introduced into the other ends of the tubes and held there under pressure, so

that if there are any leaks in the tubing the presence of the same will be readily detected. Any suitable piping for liquid or water pressure ma be arranged adjacent to the swaging-mac 'ne, as at 25, for introducing water into the tubes, such flexible or other connec-' tion with the 0 en ends of the tubes being also provided with nipple 25' for securing it to the ends of the tubes temporarily. After the tubes have been thus swa ed and tested they may be removed from tile machine by reversing the operation of the cylinders 2 head opposite sai erase? and 3. In this simple manner the machine may be manipulated for roperly forming the ends of the flues to fit t e flue-sheet of a boiler, and all defective ends'of such flues are discovered before placing in a boiler. If the flue has seams, they are also discovered and the tubes discarded. The fines are preferably expanded while hot to'fit the holes in the flue-sheet, and the said fiues are thus perfectly free from dirt and scale when they are to be applied to the flue-sheet, and there is no necesslty for the use of liners in fitting the same, and the labor of placing the liners is also saved.

In Fig. 3 I have illustrated a tube in position for swaging, with a tube surrounding collar 24 secured in the sWaging-head, the said collar being reduced in internal diameter near one end, as at 27. A plug 22 is also shown within the reduced end of the tube,

illustrating the manner in which the said plug cooperates with the collar in-swaging the end of the tube. When a collar of the proper internal shape has been placed in one of the apertures, as 20, of the swaging-head and the said head is forced toward the tube, the end of the tube will be shaped between the inner face of the collar and the head of the plug 22. It will be evident that differentshaped collars may be em loyed in connection with the swaging-hea and made to cooperate with the swaging plug or plugs 22. Of course it will be understood that the stem of the swa ing-plug 22 may be varied in length, so t at t esaid plug may properly enter the end of the tube and assume a pro er I osition with relation to the collar or thimle, which is laced in the aperture of the swaging-head without de arting from the ipirit of the invention. s shown'in said ig.-3, the collars may be provided with retalning-fianges at one end, as shown at 28.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A tube-swaging machine, com rising gripping means for holding tubes or ues, a

'reclprocating swaging-head havin s reading plugs and collars, and power-cy in er for forcing the plugs into the ends of the tubes and the collars over them and for withdrawing the same from the tubes.

2. A swaging-machine, comprising tube or flue ripping means, areciprocatin swaginghear? arranged opposite the ends 0 the tubes and having apertures for receiving the ends of the tubes, and dplugs carried bythe said apertures, and a powercylinder for reciprocating the said swaginghead.

3. A flue swaging and plugging machine, comprising a frame, a gripping means mounted t ereon, a reciprocating swagin head formed with inner and outer walls, t eouter wall having apertures formed therein, ferrules fitting in said a ertures and also made of a size to fit upon t e said tubes, and lugs onswages garried by the inner Wall 0% the head opposite said apertures, a piston carrying the said sWaging-head, and extending into a power-cylinder, and means for introducing pressure into either end of said poWercylinder for reciprocating the swaging-head. 4. A swaging-machine, comprising tubegripping jaws, a reciprocating 'swaging-head aving apertures formed therein, shaping collars or ferrules removably mounted in the said apertures and cooperating swaging plugs carried by the said swaging-head.

5. A sWaging-machine, com rising means for holding a tube, a sWaging-head movable with relation thereto, shaping collars or ferrules movably mounted in the swaging-head,

' plugs cooperating with the collars for swaging or shaping the ends. of tubes, and a powerdriven piston carrying the said sWaging-head.

6. A swaging apparatus, comprising atubegripping device, areciprocating collar-carrying head mounted opposite the gripping device and-provided Wit apertures, flanged collars or ferrules fitting in said apertures,

sWa inglugs also carried by said swaginghea an means for reciprocating the swaging-head fo r causing the plu s and collars to act upon tubes held by the grip ing means.

' 7. A sWaging-machine for ues or tubes comprising gripping means for holding the ends of the tubes and a swaging-head carrying) collars mounted opposite the ends of the tu es, and power mec anisin'for forcing the sWa'ging-head and collars over and in the ends of the tubes to'swage the same.

r 8. A sWaging-machine comprising tube or flue ripping means, a reciprocating sWaginghea arranged opposite the ends of the tubes, a power-cylinder for reciprocating the said swaging head and means for introducing Water under pressure into the tubes for testing the same While the said sWaging-head is in I one end of said tubes. In testimony whereof I aflix my signature in presence of two Witnesses.

' WILLIAM RILEY BARNES;

Witnesses:

Roar. J. GRIEFIN, C. A; HeRRIS. 

